3.3 LBBAP with SDL procedure-related outcomes
LBBAP was successful in 65 of 69 (94.2%) patients, while 200 underwent
conventional RVP. Four patients in whom LBBAP failed, conversion to
conventional RVP was done and these patients were excluded from this
study population. The procedural outcomes according to the increase in
experience were as follows: Up to the 25th case, until the plateau phase
of the procedure, the time was defined as the early period, and after
the plateau phase, it was further divided into a middle period and a
late period (divided by 20 cases each). The success rates of the
procedures in each period were 89.3%, 95.2%, and 100%, respectively
(Table 2, Supplementary Figure S4). The number of screw attempts did not
significantly decrease as the number of cases increased, but the number
of sheath change (0.36 ± 0.70, 0.20 ± 0.52, P <0.05)
significantly decreased as the number of cases increased.
There were three cases of major complications during the early and
middle period, of which there was one hematoma requiring prolonged
hospitalization, and two ventricular lead dislodgements occurring 1 day
and 3 months after the procedure, respectively. Of the two dislodgement
cases, one patient required ventricular lead revision and LBBAP was
achieved again, and one case did not require revision because of its
stable parameters with a ventricular lead in the RV inferior wall.